Crustal magnetic anomaly and Curie surface beneath Tarim Basin, China, and its adjacent area
Crustal magnetic anomaly and Curie surface beneath Tarim Basin, China, and its adjacent area
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中国塔里木盆地及邻区地壳磁异常及居里面
DOI：
10.1139/cjes-2014-0204
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发表时间：
2015
影响因子：
1.4
通讯作者：
Chunhua Bai
中科院分区：
文献类型：
--
作者：
Guoming Gao;Guofa Kang;Guangquan Li;Chunhua Bai
利用NGDC-720-V3地磁场模型，研究了塔里木盆地及邻区地壳磁异常分布和居里面。结果表明，塔里木盆地磁异常的空间分布与区域构造格局相吻合，夹在山脉之间的盆地居里表面的浅部位于盆地的隆起区，对应高热流值。相反，居里表面的深部，具有低的热流值，分布沿着盆地的凹陷带。居里点深度与实测热流值一致，相关系数为0.65。
Based on the geomagnetic field model NGDC-720-V3 (National Geophysical Data Center), the distribution of crustal magnetic anomalies and the Curie surface beneath Tarim Basin, China, and its adjacent area were investigated. The results show that the spatial distribution of the magnetic anomalies in Tarim Basin coincides with the regional tectonic structure, i.e., a basin sandwiched between mountain ranges. Shallow parts of the Curie surface are located in uplifted zones of the basin and correspond well to high values of heat flow. In contrast, deep parts of the Curie surface, having low values of heat flow, are distributed along the depression zones of the basin. The Curie point depth is consistent with the measured heat flow value, with a correlation coefficient of 0.65.